Posted by Shane on Friday, February 15, 2013 at 11:37pm.
what is the unit for measuring the speed at which a motor spins?

Science  drwls, Saturday, February 16, 2013 at 12:37am
When listing the specifications of a motor, rpm (revolutions per minute) is usually used.
In physics, it is preferable to measure rotation rate in radians per second. This simplifies the equations for energy and angular momentum.
1 radian/sec = 30/pi rpm
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